Keyboard



FIG. 1 is a top perspective view of a keyboard showing our new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a left-side elevation view thereof;

FIG. 5 is a right-side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a bottom perspective view thereof; and,

FIG. 9 is an enlarged view of the encircled portion of FIG. 1.

The dashed broken lines depict portions of the keyboard that form no part of the claimed design.

The dot-dot-dash broken lines encircle portions of the claimed design that are illustrated in enlargements and form no part of the claimed design. 

CLAIM The ornamental design for a keyboard, as shown and described. 